Hilbert's Inequality

Published: 15 August 2024
on channel: Mike, the Mathematician
151
8

We prove Hilbert's integral inequality where one considers the kernel 1/(x+y) over the first quadrant. After several changes of variables, we are able to apply Cauchy-Schwarz to prove the boundedness of this operator. This result can be discretized to prove that the Hilbert matrix is bounded on l^2.

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